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Finding the Fourth Proportional to 43,605.70, 65,402.41 and 14,019.78

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Solution

The fourth proportional to 43,605.70, 65,402.41 and 14,019.78 is: 21,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,605.70 : 65,402.41 = 14,019.78 : x
  2. Step 2: Convert to fraction form
    43,605.70/65,402.41 = 14,019.78/x
  3. Step 3: Cross multiply
    43,605.70x = 65,402.41 × 14,019.78
  4. Step 4: Simplify right side
    43,605.70x = 916,927,399.67
  5. Step 5: Solve for x
    x = 916,927,399.67/43,605.70
  6. Step 6: Final answer
    x = 21,027.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.